const createError = require('http-errors')
const express = require('express')
const path = require('path')
const cookieParser = require('cookie-parser')
const logger = require('morgan')
//导入express-session包
const expressSession = require('express-session')

//导入路由规则模块
const authRouter = require('./routes/web/auth')
const indexRouter = require('./routes/web/index')

const app = express()

// view engine setup
app.set('views', path.join(__dirname, 'views'))
app.set('view engine', 'ejs')

app.use(logger('dev'))
app.use(express.json())
app.use(express.urlencoded({ extended: false }))
app.use(cookieParser())
app.use(express.static(path.join(__dirname, 'public')))

// 配置session
app.use(
  expressSession({
    secret: 'itheima', // session信息的加密字符串
    resave: false, // 固定写法
    saveUninitialized: true, // 固定写法
    cookie: {
      maxAge: 60 * 60 * 1000 // session信息会保存1小时
    }
  })
)
//使用路由规则模块
app.use(authRouter)
app.use(indexRouter)

// catch 404 and forward to error handler
app.use(function (req, res, next) {
  next(createError(404))
})

// error handler
app.use(function (err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message
  res.locals.error = req.app.get('env') === 'development' ? err : {}

  // render the error page
  res.status(err.status || 500)
  res.render('error')
})

module.exports = app
